[INFO] cloning repository https://github.com/JPMoresmau/rust-interview
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JPMoresmau/rust-interview" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-interview", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-interview'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9dcc59f9c68da3fe9604cb449ab68c9f90e0ce0
[INFO] checking JPMoresmau/rust-interview against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJPMoresmau%2Frust-interview" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/JPMoresmau/rust-interview on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JPMoresmau/rust-interview
[INFO] finished tweaking git repo https://github.com/JPMoresmau/rust-interview
[INFO] tweaked toml for git repo https://github.com/JPMoresmau/rust-interview written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JPMoresmau/rust-interview already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83bd7c62c4dd971f9bdaee392d6734aba6635c0df9a918c8120deb8a614ab45a
[INFO] running `Command { std: "docker" "start" "-a" "83bd7c62c4dd971f9bdaee392d6734aba6635c0df9a918c8120deb8a614ab45a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83bd7c62c4dd971f9bdaee392d6734aba6635c0df9a918c8120deb8a614ab45a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83bd7c62c4dd971f9bdaee392d6734aba6635c0df9a918c8120deb8a614ab45a", kill_on_drop: false }`
[INFO] [stdout] 83bd7c62c4dd971f9bdaee392d6734aba6635c0df9a918c8120deb8a614ab45a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfe7a7d52a4cbb265f18b00a1a461a060cd069cddd4ba6e4bfbebcf6402b50b1
[INFO] running `Command { std: "docker" "start" "-a" "cfe7a7d52a4cbb265f18b00a1a461a060cd069cddd4ba6e4bfbebcf6402b50b1", kill_on_drop: false }`
[INFO] [stderr]     Checking interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: ambiguous glob re-exports
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use crate::btree::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ the name `Solution` in the type namespace is first re-exported here
[INFO] [stdout] ...
[INFO] [stdout] 24 | pub use crate::matrix::*;
[INFO] [stdout]    |         ---------------- but the name `Solution` in the type namespace is also re-exported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ambiguous_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: ambiguous glob re-exports
[INFO] [stdout]   --> src/lib.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub use crate::btree::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^ the name `Solution` in the type namespace is first re-exported here
[INFO] [stdout] ...
[INFO] [stdout] 24 | pub use crate::matrix::*;
[INFO] [stdout]    |         ---------------- but the name `Solution` in the type namespace is also re-exported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(ambiguous_glob_reexports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/btree.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&'a self, key: &K) -> Option<&V> {
[INFO] [stdout]    |                 ^^                          -- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&'a self, key: &K) -> Option<&'a V> {
[INFO] [stdout]    |                                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/btree.rs:46:17
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&'a self, key: &K) -> Option<&V> {
[INFO] [stdout]    |                 ^^                          -- the lifetime gets resolved as `'a`
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to consistently use `'a`
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn get(&'a self, key: &K) -> Option<&'a V> {
[INFO] [stdout]    |                                              ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "cfe7a7d52a4cbb265f18b00a1a461a060cd069cddd4ba6e4bfbebcf6402b50b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfe7a7d52a4cbb265f18b00a1a461a060cd069cddd4ba6e4bfbebcf6402b50b1", kill_on_drop: false }`
[INFO] [stdout] cfe7a7d52a4cbb265f18b00a1a461a060cd069cddd4ba6e4bfbebcf6402b50b1